P23A2

Exhaust Heat Exchanger Exhaust Bypass Valve B Control Circuit/Open

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$28–94 (est.)

Symptoms

Check Engine light comes on
Possible reduction in the efficiency of the heat recovery system
In rare cases - a slight increase in fuel consumption
Possible errors in related temperature control systems

Causes

Open or short circuit in control circuit
Bypass solenoid valve B faulty
Poor contact in circuit connectors
Violation of the integrity of the wiring harness
Engine control module problem

How to Fix

Check valve control circuit integrity
Test valve solenoid resistance
Eliminate detected breaks or short circuits in the wiring
Check connectors and contacts for corrosion
If necessary, replace the solenoid valve

Related codes

P23A0 P23A1 P23A3